Bidens pilosa is a species of flowering plant in the aster family. It is native to the Americas but it is known widely as an introduced species of other regions, including Eurasia, Africa, Australia, and the Pacific Islands.[2][citation needed] It is a tall branched weed with thin yellow flowers that develop into a cluster of barbed fruits.[3] Its many common names include black-jack,[4]beggar-ticks, cobbler's pegs, sticky beaks, farmer's friends[5] and Spanish needle.[2][6][7][8][9] The fruits are like short, stiff hairs. They get stuck in feathers, fur, fleeces, clothing, etc.[10][11] This bur is widespread throughout the warmer regions of the world.[12] Playstation back slot for play import games. Its little black fruits hook onto clothes or animals and thereby the bur spreads itself around. It is susceptible to hand weeding if small enough, even then must be bagged, and thick mulches may prevent it from growing.[13] Each fruit has two to four barbed spines.[14] A weed of gardens, woodlands, and waste areas, people or animals that brush against the plant will get the fruits stuck on their clothing or fur.[15][16][17] Although this plant is primarily considered a weed, in many parts of the world it is a source of food and medicine.[18] For example, it is reportedly widely eaten in Africa,[15] and in Vietnam, during the Vietnam War, soldiers adopted the herb as a vegetable, which lead to it being known as the 'soldier vegetable'.[19]
Immature fruiting head
Description Blackjack is known around the medical marijuana community as a sativa-dominate strain that can obliterate away stress, anxiety and depression for hours and hours with its exceptionally long-lasting high.
Description[edit]
Bidens Pilosa is an annual forb of gracilehabit, growing up to 1.8 meters tall. It grows aggressively on disturbed land and often becomes weedy. The leaves are oppositely arranged and pinnate in form with three to five dentate, ovate-to-lanceolate leaflets. The petioles are slightly winged.[20]
The plant may flower at any time of the year, but in temperate regions it blooms mainly in summer and autumn. Flowers are borne in small heads on relatively long peduncles. The heads bear about four or five broad white ray florets, surrounding many tubular yellow disc florets. The fruits are slightly curved, stiff, rough black rods, tetragonal in cross section, about 1 cm long, with typically two to three stiff, heavily barbed awns at their distal ends. The infructescences form stellate spherical burrs about one to two centimeters in diameter. The barbed awns catch onto fur or clothing, and can injure flesh. It is an effective means of seed dispersal by zoochory, as the fruits are transported by animals. This mechanism has helped the plant become a noxious weed in temperate and tropical regions.[20]
Common names[edit]
This plant has many common names in different regions and languages, including:[2]
Traditional uses[edit]
In traditional Chinese medicine, this plant is considered a medicinal herb, called xian feng cao (Chinese: å¸è±è).[citation needed]. In traditional Bafumbira medicine, this plant is applied on a fresh wound and is known to be a medicinal herb, called inyabalasanya.[citation needed]
Chemistry[edit]
Almost two hundred compounds have been isolated from B. pilosa, especially polyacetylenes and flavonoids.[23] The plant contains the chalconeokanin[24] and ethyl caffeate, a hydroxycinnamic acid.[25]
Extracts of B. pilosa suppressed the growth of isolated adult T-cell leukemia cells in vitro.[26]
See also[edit]References[edit]
External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Bidens_pilosa&oldid=921516863'
Blackjack is known around the medical marijuana community as a sativa-dominate strain that can obliterate away stress, anxiety and depression for hours and hours with its exceptionally long-lasting high.
This makes her a go-to in the morning for a wake and bake session that relaxes you just enough to not couchlock you, while reaping the sativa benefits of a beautiful head high that overcomes you with euphoria and makes you talkative.
Blackjack Weed Plant
This strain is a cross of Black Domina and Jock Horror, so you can expect a nice blend of sweet citrus, balanced with an earthy pine flavor that is incredibly pungent. You can thank her high trichome-encrusted calyxes for her pungent smell too. Those babies have been known to swell up to the size of grapes!
Our tip for this strain: She is great for coming out of your shell and really helps those that suffer from anxiety. But before you go toking prior to your important business meeting, maybe take a shower first or throw on some extra body spray, because Blackjack is one pungent cannabis strain. Wonderful for phone and skype calls however, so skunk up that room.
What we love about this strain: We are big fans of sativa strains that have a big impact on the medical marijuana community. Often Indicas get all the recognition and while itâs deserved, when a sativa comes around and delivers high THC without inducing paranoia or anxiety we can't help but loving it.
Quote from a customer: âThis was my first time growing for my own medical use so I didn't expect much. Glad I was wrong. I grew 2 black jack fem in 50/50 perlite/coco with nutes that my dad gave me. Grew under 400W HPS/MH. Ended up with over 2oz. per plant. Maybe closer to 3oz. but we smoked a jar before I weighed. Cured for 4 weeks in jars. Great smoke, flavor, and effects. Works great for my pain and insomnia as well as my anxiety and PTSD. Thanks Nirvana.â - Elijah C.
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